Ford Ecosport: Module Communications Network / Diagnosis and Testing - Communications Network

Ford Ecosport 2014-2024 Service and Repair Manual / Electrical Distribution / Module Communications Network / Diagnosis and Testing - Communications Network

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Diagnostic Trouble Code Chart

Module	DTC	Description	Action
GWM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AC
GWM	U3000:44	Control Module: Data Memory Failure	GO to Pinpoint Test AB
GWM	U3000:45	Control Module: Program Memory Failure	GO to Pinpoint Test AB
GWM	U3000:46	Control Module: Calibration / Parameter Memory Failure	GO to Pinpoint Test AB
GWM	U3000:47	Control Module: Watchdog / Safety µC Failure	GO to Pinpoint Test AB

Symptom Chart(s)

Symptom Chart: Communication Network

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart

Condition	Possible Sources	Actions
The vehicle does not start with the diagnostic scan tool connected to the DLC and/or multiple malfunction indicators are only on when the diagnostic scan tool is connected to the DLC	Refer to the Pinpoint Test	GO to Pinpoint Test AA
No HS-CAN1 communication, all modules are not responding	Refer to the Pinpoint Test	GO to Pinpoint Test V
No HS-CAN2 communication, all modules are not responding	Refer to the Pinpoint Test	GO to Pinpoint Test W
No HS-CAN3 communication, all modules are not responding	Refer to the Pinpoint Test	GO to Pinpoint Test X
No HS-CAN4 communication, all modules are not responding	Refer to the Pinpoint Test	GO to Pinpoint Test Y
No MS-CAN communication, all modules are not responding	Refer to the Pinpoint Test	GO to Pinpoint Test Z
The PCM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test A
The ABS module does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test B
The RCM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test C
The OCS module does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test D
The SCCM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test E
The IPC does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test F
The BCM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test G
The PAM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test H
The HVAC module does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test I
The ACM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test J
The APIM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test K
The DSP does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test L
The TCU does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test M
The PSCM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test N
The DDM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test O
The PDM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test P
The SODL does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test Q
The SODR does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test R
The TRM does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test S
The BECMB does not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test T
All networks do not respond to the diagnostic scan tool	Refer to the Pinpoint Test	GO to Pinpoint Test U
No power to the DLC	Refer to the Pinpoint Test	GO to Pinpoint Test AA

Pinpoint Tests

PINPOINT TEST A: THE PCM (POWERTRAIN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 23 for schematic and connector information. Refer to Wiring Diagrams Cell 24 for schematic and connector information. Refer to Wiring Diagrams Cell 25 for schematic and connector information.

Normal Operation and Fault Conditions

The PCM communicates on the HS-CAN1 .

Possible Sources

Fuse
Wiring, terminals and connectors
PCM

A1 VERIFY WHETHER OTHER HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) MODULES PASS THE NETWORK TEST

Using a diagnostic scan tool, perform the network test.

Is the text "pass" or a DTC listed next to any of the following modules (if equipped): APIM , BCM , BECMB , or PCM ?

Yes

If "pass" or a DTC was listed next to the PCM , a network fault is not currently present.
If "pass" or a DTC was listed next to one or more modules other than the PCM , GO to A2

No	No modules are currently communicating on the HS-CAN1 . GO to Pinpoint Test V

A2 PC/ED (POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS) MANUAL PINPOINT TEST QA VERIFICATION CHECK

Verify PC/ED manual pinpoint test QA has been performed.

Has pinpoint test QA been performed?

Yes

GO to A3

No	Refer to PC/ED manual pinpoint test QA verification check.

A3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) TERMINATION RESISTANCE

Ignition OFF.

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 C2431-19

Is the resistance between 108 and 132 ohms?

Yes

GO to A5

GO to A4

A4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE PCM (POWERTRAIN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect PCM C2132B (1.0L EcoBoost), C1551B (1.5L Duratec Manual Transmission), C1926B (1.5L Duratec Automatic Transmission) or C1915B (2.0L EcoBoost) .

Measure:
Click to display connectors
1.0L EcoBoost

Positive Lead Measurement / Action Negative Lead

C1232B-69 C2431-20

C1232B-68 C2431-19

Click to display connectors
1.5L Duratec Manual Transmission

Positive Lead Measurement / Action Negative Lead

C1551B-37 C2431-20

C1551B-38 C2431-19

Click to display connectors
1.5L Duratec Automatic Transmission

Positive Lead Measurement / Action Negative Lead

C1926B-75 C2431-20

C1926B-76 C2431-19

Click to display connectors
2.0L EcoBoost

Positive Lead Measurement / Action Negative Lead

C1915B-69 C2431-20

C1915B-68 C2431-19

Are the resistances less than 3 ohms?

Yes

GO to A5

No	REPAIR the circuit in question.

A5 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (PCM).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 42 for schematic and connector information.

Normal Operation and Fault Conditions

The ABS module communicates on the HS-CAN2 .

Possible Sources

Fuse
Wiring, terminals and connectors
ABS module

Visual Inspection and Pre-checks

Verify BJB fuses 4 (40A), 33 (60A) and 59 (5A) are OK.

B1 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: ABS module C155

Ignition ON.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C155-1		Ground
C155-30		Ground
C155-35		Ground

Are the voltages greater than 11 volts?

Yes

GO to B2

No	VERIFY BJB fuses 4 (40A), 33 (60A) and 59 (5A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

B2 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C155-14 Ground

Are the resistances less than 3 ohms?

Yes

GO to B3

No	REPAIR the circuit in question.

B3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C155-42 C2431-18

C155-43 C2431-17

Are the resistances less than 3 ohms?

Yes

GO to B4

No	REPAIR the circuit in question.

B4 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all the ABS module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ABS module connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ABS module.
REFER to: Hydraulic Control Unit (HCU) (206-09 Anti-Lock Brake System (ABS) and Stability Control, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: THE RCM (RESTRAINTS CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The RCM communicates on the HS-CAN2 .

Possible Sources

Fuse
Wiring, terminals and connectors
RCM

Visual Inspection and Pre-checks

Verify BCM fuses 10 (10A) and 15 (15A) are OK.

WARNING: Never probe the electrical connectors on airbag, Safety Canopy® or side air curtain assemblies. Failure to follow this instruction may result in the accidental deployment of these assemblies, which increases the risk of serious personal injury or death.

WARNING: Never disassemble or tamper with seat belt deployable components, including pretensioners, load limiters and inflators. Never back probe deployable device electrical connectors. Tampering or back probing may cause an accidental deployment and result in personal injury or death.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

C1 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONNECTION

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RCM C310A and C310B.

Are RCM C310A pin 19 and C310B pins 47 and 48 OK?

Yes

GO to C2

No	INSTALL a new wiring harness. REPOWER the Supplemental Restraint System (SRS). REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

C2 CHECK FOR BECMB (BATTERY ENERGY CONTROL MODULE B) NETWORK COMMUNICATION

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BECMB pass the network test?

Yes

GO to C3

No	DIAGNOSE a module communication concern. GO to Pinpoint Test T

C3 RETRIEVE RECORDED BECMB (BATTERY ENERGY CONTROL MODULE B) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform a BECMB self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

DIAGNOSE the Diagnostic Trouble Codes (DTCs).
REFER to: Airbag Supplemental Restraint System (SRS) - Vehicles Without: Rear Seat Side Airbag (501-20B Supplemental Restraint System, Diagnosis and Testing).
REFER to: Airbag Supplemental Restraint System (SRS) - Vehicles With: Rear Seat Side Airbag (501-20B Supplemental Restraint System, Diagnosis and Testing).

GO to C4

C4 CHECK THE RCM (RESTRAINTS CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Repower the SRS .
REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C310A-19 Ground

Is the voltage greater than 11 volts?

Yes

GO to C5

No	VERIFY BCM fuses 15 (15A) or 24 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

C5 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CASE GROUND

Ignition OFF.

Measure the resistance between the RCM case and a good chassis ground.

Is the resistance less than 3 ohms?

Yes

GO to C6

No	REPAIR the RCM case ground as necessary.

C6 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE RCM (RESTRAINTS CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C310B-48 C2431-18

C310B-47 C2431-17

Are the resistances less than 3 ohms?

Yes

GO to C7

No	REPAIR the circuit in question.

C7 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the RCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM connectors. Make sure they seat and latch correctly.

Repower the Supplemental Restraint System (SRS).

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D: THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The OCS module communicates on the HS-CAN2 .

Possible Sources

Fuse
Wiring, terminals and connectors
OCS module

Visual Inspection and Pre-checks

Verify BCM fuses 24 (20A) and 15 (15A) are OK.

D1 CHECK FOR BECMB (BATTERY ENERGY CONTROL MODULE B) NETWORK COMMUNICATION

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BECMB pass the network test?

Yes

GO to D2

No	DIAGNOSE a module communication concern. GO to Pinpoint Test T

D2 RETRIEVE RECORDED BECMB (BATTERY ENERGY CONTROL MODULE B) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform a BECMB self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

GO to D3

D3 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Wait one minute.

Disconnect: OCS module C3159.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3043-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to D4

No	VERIFY BCM fuses 24 (20A) or 15 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

D4 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3043-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D5 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3043-2 C2431-18

C3043-3 C2431-17

Are the resistances less than 3 ohms?

Yes

GO to D6

No	REPAIR the circuit in question.

D6 CHECK FOR CORRECT OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the OCS module connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCS module connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new OCS module.
REFER to: Occupant Classification System (OCS) Sensor - Vehicles With: Rear Seat Side Airbag (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E: THE SCCM (STEERING COLUMN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM communicates on the HS-CAN2 .

Possible Sources

Fuse
Wiring, terminals and connector
SCCM

Visual Inspection and Pre-checks

Verify BCM fuse 30 (15A) is OK.

E1 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTANCE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the DLC .

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 C2431-17

Is the resistance between 108 and 132 ohms?

Yes

GO to E3

GO to E2

E2 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: SCCM C226B.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226B-4 C2431-18

C226B-5 C2431-17

Are the resistances less than 3 ohms?

Yes

GO to E5

No	REPAIR the circuit in question.

E3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect: SCCM C226C.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226C-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to E4

No	VERIFY BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

E4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226C-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to E5

No	REPAIR the circuit.

E5 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST F: THE IPC (INSTRUMENT PANEL CLUSTER) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 60 for schematic and connector information.

Normal Operation and Fault Conditions

The IPC communicates on the HS-CAN3 .

Possible Sources

Fuse
Wiring, terminals and connector
IPC

Visual Inspection and Pre-checks

Verify BCM fuse 22 (7.5A) is OK.

F1 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the DLC .

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 C2431-15

Is the resistance between 108 and 132 ohms?

Yes

GO to F3

GO to F2

F2 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: IPC C220.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220-12 C2431-16

C220-13 C2431-15

Are the resistances less than 3 ohms?

Yes

GO to F5

No	REPAIR the circuit in question.

F3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) VOLTAGE SUPPLY CIRCUIT

Disconnect: IPC C220.

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220-8 Ground

Is the voltage greater than 11 volts?

Yes

GO to F4

No	VERIFY BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

F4 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) GROUND CIRCUIT

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220-3 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT negative battery cable. GO to F5

No	REPAIR the circuit.

F5 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. Refer to the appropriate Removal and Installation procedure in Section 413-01.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: THE BCM (BODY CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The BCM communicates on the HS-CAN1 .

Possible Sources

Fuse
Wiring, terminals and connector
BCM

Visual Inspection and Pre-checks

Verify High Current BJB MEGA fuse 3 (100A) and BJB fuse 32 (30A) are OK.

G1 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: BCM C2280A and C2280B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280A-1 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280B-1 Ground

Are the voltages greater than 11 volts?

Yes

Connect BCM C2280A and C2280B. GO to G2

No	VERIFY High Current BJB MEGA fuse 3 (100A) or BJB fuse 32 (30A) is OK. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short.

G2 CHECK THE BCM (BODY CONTROL MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: BCM C2280F.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280F-8 Ground

C2280F-9 Ground

Are the resistances less than 3 ohms?

Yes

GO to G3

No	REPAIR the circuit in question.

G3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCM (BODY CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: BCM C2280E.

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-4 C2431-20

C2280E-5 C2431-19

Are the resistances less than 3 ohms?

Yes

GO to G4

No	REPAIR the circuit in question.

G4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all the BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST H: THE PAM (PARKING ASSIST CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 145 for schematic and connector information.

Normal Operation and Fault Conditions

The PAM communicates on the HS-CAN1 .

Possible Sources

Fuse
Wiring, terminals and connector
PAM

Visual Inspection and Pre-checks

Verify BCM fuse 3 (10A) is OK.

H1 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: PAM C4014A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4014A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to H2

No	VERIFY BCM fuse 3 (10A) is OK. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short.

H2 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-20 Ground

Is the resistance less than 3 ohms?

Yes

GO to H3

No	REPAIR the circuit.

H3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE PAM (PARKING ASSIST CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-9 C2431-20

C4226A-8 C2431-19

Are the resistances less than 3 ohms?

Yes

GO to H4

No	REPAIR the circuit in question.

H4 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Disconnect and inspect all the PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM .
REFER to: Parking Assist Control Module (PAM) (413-13A Parking Aid, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I: THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 54 for schematic and connector information. Refer to Wiring Diagrams Cell 55 for schematic and connector information.

Normal Operation and Fault Conditions

The HVAC module communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
HVAC module

Visual Inspection and Pre-checks

Verify BCM fuse 21 (7.5A) is OK.

I1 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the DLC .

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 C2431-22

Is the resistance between 108 and 132 ohms?

Yes

GO to I3

No	CONNECT negative battery cable. GO to I2

I2 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect HVAC module C228A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C228A-17 C2431-23

C228A-18 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to I5

No	REPAIR the circuit in question.

I3 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C228A-26 Ground

Is the voltage greater than 11 volts?

Yes

GO to I4

No	VERIFY BCM fuse 21 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

I4 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect HVAC module C228B.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C228A-1 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C228B-5 Ground

Are the resistances less than 3 ohms?

Yes

CONNECT negative battery cable. GO to I5

No	REPAIR the circuit.

I5 CHECK FOR CORRECT HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all the HVAC module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HVAC module connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J: THE ACM (AUDIO FRONT CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

The ACM communicates on the HS-CAN3 .

Possible Sources

Fuse
Wiring, terminals and connector
ACM

Visual Inspection and Pre-checks

Verify BCM fuse 23 (20A) is OK.

J1 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: ACM C240A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to J2

No	VERIFY BCM fuse 23 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

J2 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to J3

No	REPAIR the circuit.

J3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE ACM (AUDIO FRONT CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-19 C2431-16

C240A-30 C2431-15

Are the resistances less than 3 ohms?

Yes

GO to J4

No	REPAIR the circuit in question.

J4 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the ACM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K: THE APIM (SYNC MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

The APIM communicates on the HS-CAN1 , HS-CAN3 and HS-CAN4 .

Possible Sources

Fuse
Wiring, terminals and connector
APIM

Visual Inspection and Pre-checks

Verify BCM fuse 17 (15A) is OK.

K1 CHECK THE APIM (SYNC MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: APIM C2383A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to K2

No	VERIFY BCM fuse 17 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

K2 CHECK THE APIM (SYNC MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-37 Ground

Is the resistance less than 3 ohms?

Yes

GO to K3

No	REPAIR the circuit.

K3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-53 C2431-20

C2383A-54 C2431-19

Are the resistances less than 3 ohms?

Yes

GO to K4

No	REPAIR the circuit in question.

K4 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-19 C2431-16

C2383A-20 C2431-15

Are the resistances less than 3 ohms?

Yes

GO to K5

No	REPAIR the circuit in question.

K5 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-41 C2431-7

C2383A-42 C2431-6

Are the resistances less than 3 ohms?

Yes

GO to K6

No	REPAIR the circuit in question.

K6 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

COMPLETE THE FDRS GUIDED ROUTINE

NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

The DSP communicates on the HS-CAN3 .

Possible Sources

Fuse
Wiring, terminals and connector
DSP

Visual Inspection and Pre-checks

Verify BJB fuses 25 (15A) and 41 (15A) are OK.

L1 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: DSP C3154B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3154B-4 Ground

C3154B-8 Ground

Are the voltages greater than 11 volts?

Yes

GO to L2

No	VERIFY BJB fuses 25 (15A) and 41 (15A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

L2 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3154B-1 Ground

C3154B-5 Ground

Are the resistances less than 3 ohms?

Yes

GO to L3

No	REPAIR the circuit in question.

L3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Disconnect: DSP C3154A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3154A-1 C2431-16

C3154A-11 C2431-15

Are the resistances less than 3 ohms?

Yes

GO to L4

No	REPAIR the circuit in question.

L4 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the DSP connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: THE TCU (TELEMATIC CONTROL UNIT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 133 for schematic and connector information.

Normal Operation and Fault Conditions

The TCU communicates on the HS-CAN4 .

Possible Sources

Fuse
Wiring, terminals and connector
TCU

Visual Inspection and Pre-checks

Verify BCM fuse 11 (5A) is OK.

M1 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the DLC .

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 C2431-6

Is the resistance between 108 and 132 ohms?

Yes

GO to M3

GO to M2

M2 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE TCU (TELEMATIC CONTROL UNIT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: TCU C3842.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3842-8 C2431-7

C3842-16 C2431-6

Are the resistances less than 3 ohms?

Yes

GO to M5

No	REPAIR the circuit in question.

M3 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3842-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to M4

No	VERIFY BCM fuse 11 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

M4 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3842-13 Ground

Is the resistance less than 3 ohms?

Yes

GO to M5

No	REPAIR the circuit.

M5 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the TCU connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCU connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: THE PSCM (POWER STEERING CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 43 for schematic and connector information.

Normal Operation and Fault Conditions

The PSCM communicates on the HS-CAN2 .

Possible Sources

Fuse
Wiring, terminals and connectors
PSCM

Visual Inspection and Pre-checks

Verify High Current BJB MEGA fuse 2 (60A) and BJB fuse 56 (5A) are OK.

N1 CHECK THE PSCM (POWER STEERING CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: PSCM C2368C and C2368A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2368C-1 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2368A-5 Ground

Are the voltages greater than 11 volts?

Yes

GO to N2

No	Verify High Current BJB MEGA fuse 2 (60A) and BJB fuse 56 (5A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

N2 CHECK THE PSCM (POWER STEERING CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2368B-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to N3

No	REPAIR the circuit.

N3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE PSCM (POWER STEERING CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2368A-2 C2431-18

C2368A-6 C2431-17

Are the resistances less than 3 ohms?

Yes

GO to N4

No	REPAIR the circuit in question.

N4 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PSCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (EPAS).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST O: THE DDM (DRIVER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

The DDM communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
DDM

Visual Inspection and Pre-checks

Verify BJB fuse 48 (30A) is OK.

O1 CHECK THE DDM (DRIVER DOOR MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: DDM C501A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to O2

No	Verify BJB fuse 48 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

O2 CHECK THE DDM (DRIVER DOOR MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to O3

No	REPAIR the circuit.

O3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE DDM (DRIVER DOOR MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-7 C2431-23

C501A-6 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to O4

No	REPAIR the circuit in question.

O4 CHECK FOR CORRECT DDM (DRIVER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the DDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST P: THE PDM (PASSENGER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

The PDM communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
PDM

Visual Inspection and Pre-checks

Verify BCM fuse 7 (30A) is OK.

P1 CHECK THE PDM (PASSENGER DOOR MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: PDM C652A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to P2

No	VERIFY BCM fuse 7 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

P2 CHECK THE PDM (PASSENGER DOOR MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to P3

No	REPAIR the circuit.

P3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PDM (PASSENGER DOOR MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-7 C2431-23

C652A-6 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to P4

No	REPAIR the circuit in question.

P4 CHECK FOR CORRECT PDM (PASSENGER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PDM .
REFER to: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Q: THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 146 for schematic and connector information.

Normal Operation and Fault Conditions

The SODL communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
SODL

Visual Inspection and Pre-checks

Verify BJB fuse 58 (10A) is OK.

Q1 CHECK THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SODL C4369.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4369-5 Ground

Is the voltage greater than 11 volts?

Yes

GO to Q2

No	VERIFY BJB fuse 58 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

Q2 CHECK THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4369-8 Ground

Is the resistance less than 3 ohms?

Yes

GO to Q3

No	REPAIR the circuit.

Q3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4369-6 C2431-23

C4369-7 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to Q4

No	REPAIR the circuit in question.

Q4 CHECK FOR CORRECT SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) OPERATION

Ignition OFF.

Disconnect and inspect the SODL connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODL connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SODL .
REFER to: Side Obstacle Detection Control Module (SODCM) (419-04 Side and Rear Vision, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST R: THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 146 for schematic and connector information.

Normal Operation and Fault Conditions

The SODR communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
SODR

Visual Inspection and Pre-checks

Verify BJB fuse 58 (10A) is OK.

R1 CHECK THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SODR C4370.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4370-5 Ground

Is the voltage greater than 11 volts?

Yes

GO to R2

No	VERIFY BJB fuse 58 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

R2 CHECK THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4370-3 Ground

C4370-8 Ground

Are the resistances less than 3 ohms?

Yes

GO to R3

No	REPAIR the circuit in question.

R3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4370-6 C2431-23

C4370-7 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to R4

No	REPAIR the circuit in question.

R4 CHECK FOR CORRECT SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) OPERATION

Ignition OFF.

Disconnect and inspect the SODR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SODR .
REFER to: Side Obstacle Detection Control Module (SODCM) (419-04 Side and Rear Vision, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST S: THE TRM (TRAILER MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 95 for schematic and connector information.

Normal Operation and Fault Conditions

The TRM communicates on the MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
TRM

Visual Inspection and Pre-checks

Verify BJB fuses 26 (20A) and 34 (50) are OK.

S1 CHECK THE TRM (TRAILER MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: TRM C425A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C425A-1 Ground

C425A-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to S2

No	VERIFY BJB fuses 26 (20A) and 34 (50) are OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

S2 CHECK THE TRM (TRAILER MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: TRM C425B.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C425B-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to S3

No	REPAIR the circuit.

S3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE TRM (TRAILER MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C425B-3 C2431-23

C425B-2 C2431-22

Are the resistances less than 3 ohms?

Yes

GO to S4

No	REPAIR the circuit in question.

S4 CHECK FOR CORRECT TRM (TRAILER MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TRM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TRM .
REFER to: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST T: THE BECMB (BATTERY ENERGY CONTROL MODULE B) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The BECMB communicates on the HS-CAN1 .

Possible Sources

Fuse
Wiring, terminals and connector
BECMB

Visual Inspection and Pre-checks

Verify BCM fuses 24 (20A) and 15 (15A) are OK.

T1 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Disconnect BECMB C2518. .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2518-11 Ground

C2518-4 Ground

Are the voltages greater than 11 volts?

Yes

GO to T2

No	VERIFY BCM fuses 24 (20A) or 15 (15A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

T2 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2518-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to T3

No	REPAIR the circuit.

T3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BECMB (BATTERY ENERGY CONTROL MODULE B) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2518-8 C2431-20

C2518-2 C2431-19

Are the resistances less than 3 ohms?

Yes

GO to T4

No	REPAIR the circuit in question.

T4 CHECK FOR CORRECT BECMB (BATTERY ENERGY CONTROL MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the BECMB connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BECMB connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BECMB .
REFER to: Battery Energy Control Module B (BECMB) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST U: ALL NETWORKS DO NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The GWM communicates with the diagnostic scan tool through the DIAG 1 and DIAG 2 networks. The GWM operates as a gateway for communication between the modules on HS-CAN1 , HS-CAN2 , HS-CAN3 , HS-CAN4 , and MS-CAN .

Possible Sources

Fuse
Wiring, terminals and connector
GWM
DLC

Visual Inspection and Pre-checks

Verify BCM fuses 22 (7.5A) and 10 (10A) are OK.

U1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 3, 4, 5, 6, 11, 14 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 3, 4, 5, 6, 11, 14 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to U2

U2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to U3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

U3 CHECK THE GWM (GATEWAY MODULE A) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: GWM C2431.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-24 Ground

C2431-13 Ground

Are the voltages greater than 11 volts?

Yes

GO to U4

No	VERIFY BCM fuse 22 (7.5A) and 10 (10A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

U4 CHECK THE GWM (GATEWAY MODULE A) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-1 Ground

C2431-14 Ground

Are the resistances less than 3 ohms?

Yes

GO to U5

No	REPAIR the circuit in question.

U5 CHECK THE DIAG 1 TERMINATION RESISTANCE, COMPONENT SIDE

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-6 (component side) C251-14 (component side)

Is the resistance between 108 and 132 ohms?

Yes

GO to U6

No	INSTALL a new GWM . REFER to REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

U6 CHECK THE DIAG 2 TERMINATION RESISTANCE, COMPONENT SIDE

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-3 (component side) C251-11 (component side)

Is the resistance between 108 and 132 ohms?

Yes

Connect the disconnected connector and test for normal operation. If the concern is still present, GO to U7

No	INSTALL a new GWM . REFER to REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

U7 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST V: NO HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The HS-CAN1 modules communicate with the diagnostic scan tool through the DLC DIAG 1 circuits. REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
APIM (if equipped)
BCM
BECMB
GWM
PAM
PCM

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

V1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 4, 5, 6, 14 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 4, 5, 6, 14 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to V2

V2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to V3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

V3 CHECK THE DIAG 1 NETWORK CIRCUIT TERMINATION RESISTANCE

Disconnect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-6 C251-14

Is the resistance between 108 and 132 ohms?

Yes

GO to V4

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

V4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) TERMINATION RESISTOR ( PCM (POWERTRAIN CONTROL MODULE) ) WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 C2431-19

Is the resistance between 108 and 132 ohms?

Yes

GO to V5

No	If the resistance is greater than 132 ohms, GO to V8 If the resistance is less than 108 ohms, CONNECT all disconnected connectors. GO to V9

V5 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 Ground

C2431-19 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to V6

GO to V10

V6 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 Ground

C2431-19 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to V7

V7 CHECK THE GWM (GATEWAY MODULE A) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 (Component Side) C2431-19 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to V20

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

V8 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE PCM (POWERTRAIN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect PCM C2132B (1.0L EcoBoost), C1551B (1.5L Duratec Manual Transmission), C1926B (1.5L Duratec Automatic Transmission) or C1915B (2.0L EcoBoost) .

Measure:
Click to display connectors
1.0L EcoBoost

Positive Lead Measurement / Action Negative Lead

C2132B-69 C2431-20

C2132B-68 C2431-19

Click to display connectors
1.5L Duratec Manual Transmission

Positive Lead Measurement / Action Negative Lead

C1551B-37 C2431-20

C1551B-38 C2431-19

Click to display connectors
1.5L Duratec Automatic Transmission

Positive Lead Measurement / Action Negative Lead

C1926B-75 C2431-20

C1926B-76 C2431-19

Click to display connectors
2.0L EcoBoost

Positive Lead Measurement / Action Negative Lead

C1915B-69 C2431-20

C1915B-68 C2431-19

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to V11

No	REPAIR the circuit in question.

V9 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 C2431-19

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- APIM C2383A (if equipped)
- BCM C2280E
- BECMB C2518
- PAM C4014A
- PCM C2132B (1.0L EcoBoost), C1551B (1.5L Duratec Manual Transmission), C1926B (1.5L Duratec Automatic Transmission) or C1915B (2.0L EcoBoost)

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the APIM , GO to V17
For the BCM , GO to V18
For the BECMB , GO to V19
For the PAM GO to V21
For the PCM , GO to V22

No	REPAIR the circuit in question. CONNECT all modules.

V10 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 Ground

C2431-19 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- APIM C2383A (if equipped)
- BCM C2280E
- BECMB C2518
- PAM C4014A
- PCM C2132B (1.0L EcoBoost), C1551B (1.5L Duratec Manual Transmission), C1926B (1.5L Duratec Automatic Transmission) or C1915B (2.0L EcoBoost)

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

For the APIM , GO to V17
For the BCM , GO to V18
For the BECMB , GO to V19
For the PAM , GO to V21
For the PCM , GO to V22

No	REPAIR the circuit in question. CONNECT all modules.

V11 CHECK FOR RESTORED COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BJB fuses 20 (20A) and 56 (5A).

Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test A

No	INSTALL the removed fuses. GO to V12

V12 VERIFY VEHICLE EQUIPMENT - APIM (SYNC MODULE)

Inspect the vehicle for an APIM .

Is the vehicle equipped with an APIM ?

Yes

GO to V13

GO to V14

V13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE APIM (SYNC MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 17 (15A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test K

No	INSTALL the removed fuse. GO to V14

V14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BCM (BODY CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM C2280E.

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test G

No	CONNECT the module. GO to V15

V15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BECMB (BATTERY ENERGY CONTROL MODULE B) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuses 24 (20A) and 15 (15A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test T

No	INSTALL the removed fuses. GO to V16

V16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PAM (PARKING ASSIST CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 3 (10A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test H

No	INSTALL the removed fuse. The HS-CAN1 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

V17 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

COMPLETE THE FDRS GUIDED ROUTINE

NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

V18 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

V19 CHECK FOR CORRECT BECMB (BATTERY ENERGY CONTROL MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the BECMB connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BECMB connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BECMB .
REFER to: Battery Energy Control Module B (BECMB) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

V20 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

V21 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM .
REFER to: Parking Assist Control Module (PAM) (413-13A Parking Aid, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

V22 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (PCM).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST W: NO HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The HS-CAN2 modules communicate with the diagnostic scan tool through the DLC DIAG 2 circuits. REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
ABS module
GWM
OCS module
PSCM
RCM
SCCM

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

W1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 3, 4, 5, 11 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to W2

W2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to W3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

W3 CHECK THE DIAG 2 NETWORK CIRCUIT TERMINATION RESISTANCE

Disconnect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-3 C251-11

Is the resistance between 108 and 132 ohms?

Yes

GO to W4

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

W4 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTOR ( SCCM (STEERING COLUMN CONTROL MODULE) ) WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 C2431-17

Is the resistance between 108 and 132 ohms?

Yes

GO to W5

No	If the resistance is greater than 132 ohms, GO to W8 If the resistance is less than 108 ohms, CONNECT all disconnected connectors. GO to W9

W5 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 Ground

C2431-17 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to W6

GO to W10

W6 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 Ground

C2431-17 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to W7

W7 CHECK THE GWM (GATEWAY MODULE A) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 (Component Side) C2431-17 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to W18

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

W8 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Connect the negative battery cable.

Disconnect SCCM C226B .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226B-5 C2431-18

C226B-6 C2431-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to W11

No	REPAIR the circuit in question.

W9 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 C2431-17

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- ABS module C155
- OCS module C3043
- PSCM C2368A
- RCM C310B
- SCCM C226B

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the ABS module, GO to W17
For the OCS module, GO to W19
For the PSCM , GO to W20
For the RCM , GO to W21
For the SCCM , GO to W22

No	REPAIR the circuit in question. CONNECT all modules.

W10 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-18 Ground

C2431-17 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- ABS module C155
- OCS module C3043
- PSCM C2368A
- RCM C310B
- SCCM C226B

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

For the ABS module, GO to W17
For the OCS module, GO to W19
For the PSCM , GO to W20
For the RCM , GO to W21
For the SCCM , GO to W22

No	REPAIR the circuit in question. CONNECT all modules.

W11 CHECK FOR RESTORED COMMUNICATION WITH THE SCCM (STEERING COLUMN CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results. Disconnect: SCCM C226B.

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test E

No	CONNECT the module. GO to W12

W12 CHECK FOR RESTORED COMMUNICATION WITH THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results. Disconnect: BJB fuses 59 (5A), 4 (40A) and 53 (60A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test B

No	INSTALL the removed fuses. GO to W13

W13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PSCM (POWER STEERING CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: High Current BJB MEGA fuse 2 (60A) and BJB fuse 56 (5A) to disable the PSCM .

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test N

No	INSTALL the removed fuses. GO to W14

W14 VERIFY VEHICLE EQUIPMENT - OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE

Inspect the vehicle for an OCS module.

Is the vehicle equipped with an OCS module?

Yes

GO to W15

GO to W16

W15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: OCS module C3043.

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test D

No	CONNECT the module. GO to W16

W16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM (RESTRAINTS CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: RCM C310B.

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test with the module disconnected?

Yes

CONNECT the module. GO to Pinpoint Test C

No	CONNECT the module. The HS-CAN2 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

W17 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all the ABS module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ABS module connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

W18 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

W19 CHECK FOR CORRECT OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the OCS module connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCS module connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

W20 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PSCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (EPAS).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

W21 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the RCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

W22 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST X: NO HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the HS-CAN3 modules are accessed through the DIAG 2 circuits on the DLC . REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
ACM
APIM (if equipped)
DSP (if equipped)
GWM
IPC

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

X1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 3, 4, 5, 11 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to X2

X2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to X3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

X3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) ( IPC (INSTRUMENT PANEL CLUSTER) ) TERMINATION RESISTANCE

Disconnect the negative battery cable.

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 C2431-15

Is the resistance between 108 and 132 ohms?

Yes

GO to X4

No	If the resistance is greater than 132 ohms, GO to X7 If the resistance is less than 108 ohms, CONNECT all disconnected connectors. GO to X8

X4 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 Ground

C2431-15 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to X5

GO to X9

X5 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 Ground

C2431-15 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to X6

X6 CHECK THE GWM (GATEWAY MODULE A) HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 (Component Side) C2431-15 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to X20

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

X7 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: IPC C220.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220-12 C2431-16

C220-13 C2431-15

Are the resistances less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to X10

No	REPAIR the circuit in question.

X8 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 C2431-15

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- APIM C2383A (if equipped)
- ACM C240A
- DSP C3154A (if equipped)
- IPC C220

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the APIM , GO to X16
For the ACM , GO to X17
For the DSP , GO to X18
For the IPC , GO to X19

No	REPAIR the circuits in question. CONNECT all modules.

X9 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-16 Ground

C2431-15 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- APIM C2383A (if equipped)
- ACM C240A
- DSP C3154A (if equipped)
- IPC C220

Are the resistances greater than 1,000 ohms?

Yes

For the APIM , GO to X16
For the ACM , GO to X17
For the DSP , GO to X18
For the IPC , GO to X19

No	REPAIR the circuit in question. CONNECT all modules.

X10 CHECK FOR RESTORED COMMUNICATION WITH THE IPC (INSTRUMENT PANEL CLUSTER) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: IPC C220.

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test F

No	CONNECT the module. GO to X11

X11 VERIFY VEHICLE EQUIPMENT - APIM (SYNC MODULE)

Inspect the vehicle for an APIM .

Is the vehicle equipped with an APIM ?

Yes

GO to X12

GO to X13

X12 CHECK FOR RESTORED COMMUNICATION WITH THE APIM (SYNC MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 17 (15A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test K

No	INSTALL the removed fuse. GO to X13

X13 CHECK FOR RESTORED COMMUNICATION WITH THE ACM (AUDIO FRONT CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 23 (20A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test J

No	INSTALL the removed fuse. GO to X14

X14 VERIFY VEHICLE EQUIPMENT - DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE)

Inspect the vehicle for a DSP .

Is the vehicle equipped with a DSP ?

Yes

GO to X15

No	The HS-CAN3 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

X15 CHECK FOR RESTORED COMMUNICATION WITH THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BJB fuses 25 (15A) and 41 (15A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test L

No	INSTALL the removed fuse. The HS-CAN3 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

X16 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

COMPLETE THE FDRS GUIDED ROUTINE

NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

X17 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the ACM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

X18 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the DSP connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

X19 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. Refer to the appropriate Removal and Installation procedure in Section 413-01.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

X20 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Y: NO HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the HS-CAN4 modules are accessed through the HS-CAN2 (Diag 2) circuits on the DLC . REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
APIM
GWM
TCU

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

Y1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 3, 4, 5, 11 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to Y2

Y2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to Y3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

Y3 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) ( TCU (TELEMATIC CONTROL UNIT MODULE) ) TERMINATION RESISTANCE

Disconnect the negative battery cable.

Disconnect: GWM C2431.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 C2431-6

Is the resistance between 108 and 132 ohms?

Yes

GO to Y4

No	If the resistance is greater than 132 ohms, GO to Y7 If the resistance is less than 108 ohms, CONNECT all disconnected connectors. GO to Y8

Y4 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 Ground

C2431-6 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to Y5

GO to Y9

Y5 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 Ground

C2431-6 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to Y10

Y6 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) TERMINATION RESISTOR, COMPONENT SIDE

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 (component side) C2431-6 (component side)

Is the resistance between 108 and 132 ohms?

Yes

GO to Y13

No	INSTALL a new GWM , REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

Y7 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE TCU (TELEMATIC CONTROL UNIT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: TCU C3842.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3842-8 C2431-7

C3842-16 C2431-6

Are the resistances less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to Y14

No	REPAIR the circuit in question.

Y8 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 C2431-6

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- APIM C2383A
- TCU C3842

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the APIM , GO to Y12
For the TCU , GO to Y14

No	REPAIR the circuits in question.

Y9 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-7 Ground

C2431-6 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- APIM C2383A
- TCU C3842

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

For the APIM , GO to Y12
For the TCU , GO to Y14

No	REPAIR the circuit in question. CONNECT all modules.

Y10 CHECK FOR RESTORED COMMUNICATION WITH THE TCU (TELEMATIC CONTROL UNIT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 11 (5A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test M

No	INSTALL the removed fuse. GO to Y11

Y11 CHECK FOR RESTORED COMMUNICATION WITH THE APIM (SYNC MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 23 (20A).

Using a diagnostic scan tool, perform the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test K

No	INSTALL the removed fuse. The HS-CAN4 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

Y12 CHECK THE APIM (SYNC MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

COMPLETE THE FDRS GUIDED ROUTINE

NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Y13 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Y14 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the TCU connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCU connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Z: NO MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the MS-CAN modules are accessed through the DIAG 2 circuits on the DLC . REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
DDM (if equipped)
GWM
HVAC module
PDM (if equipped)
TRM (if equipped)
SODL (if equipped)
SODR (if equipped)

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

Z1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 3, 4, 5, 11 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to Z2

Z2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to Z3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

Z3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) ( HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE) TERMINATION RESISTANCE

Disconnect the negative battery cable.

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 C2431-22

Is the resistance between 108 and 132 ohms?

Yes

GO to Z4

No	If the resistance is greater than 132 ohms, GO to Z7 If the resistance is less than 108 ohms, CONNECT all disconnected connectors. GO to Z8

Z4 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 Ground

C2431-22 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to Z5

GO to Z9

Z5 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 Ground

C2431-22 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to Z6

Z6 CHECK THE GWM (GATEWAY MODULE A) MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 (Component Side) C2431-22 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to Z21

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

Z7 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: HVAC module C294A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C294A-17 C2431-23

C294A-18 C2431-22

Are the resistances less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to Z22

No	REPAIR the circuit in question.

Z8 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 C2431-22

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- DDM C501A (if equipped)
- HVAC module C294A
- PDM C652A (if equipped)
- TRM C425B (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (if equipped)

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

For the DDM , GO to Z20
For the HVAC module, GO to Z22
For the PDM , GO to Z23
For the TRM , GO to Z24
For the SODL , GO to Z25
For the SODR , GO to Z26

No	REPAIR the circuits in question. CONNECT all modules.

Z9 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-23 Ground

C2431-22 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- DDM C501A (if equipped)
- HVAC module C294A
- PDM C652A (if equipped)
- TRM C425B (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (if equipped)

Are the resistances greater than 1,000 ohms?

Yes

For the DDM , GO to Z20
For the HVAC module, GO to Z22
For the PDM , GO to Z23
For the TRM , GO to Z24
For the SODL , GO to Z25
For the SODR , GO to Z26

No	REPAIR the circuit in question. CONNECT all modules.

Z10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 21 (7.5A) to disable the HVAC module.

Using a diagnostic scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test I

No	INSTALL the removed fuse. GO to Z11

Z11 VERIFY VEHICLE EQUIPMENT - DDM (DRIVER DOOR MODULE)

Inspect the vehicle for a DDM .

Is the vehicle equipped with a DDM ?

Yes

GO to Z12

GO to Z13

Z12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DDM (DRIVER DOOR MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BJB fuse 48 (30A) to disable the DDM .

Using a diagnostic scan tool, perform a network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test O

No	INSTALL the removed fuse. GO to Z13

Z13 VERIFY VEHICLE EQUIPMENT - PDM (PASSENGER DOOR MODULE)

Inspect the vehicle for a PDM .

Is the vehicle equipped with a PDM ?

Yes

GO to Z14

GO to Z15

Z14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PDM (PASSENGER DOOR MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 7 (30A) to disable the PDM .

Using a diagnostic scan tool, perform a network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test P

No	INSTALL the removed fuse. GO to Z15

Z15 VERIFY VEHICLE EQUIPMENT - TRM (TRAILER MODULE)

Inspect the vehicle for a TRM .

Is the vehicle equipped with a TRM ?

Yes

GO to Z16

GO to Z17

Z16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TRM (TRAILER MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BJB fuses 26 (20A) and 34 (50A) to disable the TRM .

Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test S

No	INSTALL the removed fuse. GO to Z17

Z17 VERIFY VEHICLE EQUIPMENT - SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) AND SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH)

Inspect the vehicle for a SODL and SODR .

Is the vehicle equipped with a SODL and SODR ?

Yes

GO to Z18

No	The MS-CAN tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

Z18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) AND SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BJB fuse 58 (10A) to disable the SODL and SODR .

Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to Z19

No	INSTALL the removed fuse. The MS-CAN tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

Z19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: SODR C4370.

Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test R

No	CONNECT the module. GO to Pinpoint Test Q

Z20 CHECK THE DDM (DRIVER DOOR MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the DDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z21 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z22 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the HVAC module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HVAC module connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z23 CHECK THE PDM (PASSENGER DOOR MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the PDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PDM .
REFER to: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z24 CHECK THE TRM (TRAILER MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TRM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , General Service Bulletin (GSB), SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TRM .
REFER to: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z25 CHECK THE SODL (SIDE OBSTACLE DETECTION CONTROL MODULE LH) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the SODL connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODL connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SODL .
REFER to: Side Obstacle Detection Control Module (SODCM) (419-04 Side and Rear Vision, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Z26 CHECK THE SODR (SIDE OBSTACLE DETECTION CONTROL MODULE RH) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the SODR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SODR .
REFER to: Side Obstacle Detection Control Module (SODCM) (419-04 Side and Rear Vision, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AA: NO POWER TO THE DLC (DATA LINK CONNECTOR)

Normal Operation and Fault Conditions

The diagnostic scan tool is connected to the DLC to communicate with the DIAG 1 and DIAG 2 circuits. The GWM translates diagnostic messages for the HS-CAN1 , HS-CAN2 , HS-CAN3 , HS-CAN4 and the MS-CAN .

Possible Sources

Fuse
Wiring, terminals or connector
Diagnostic scan tool
GWM

Visual Inspection and Pre-checks

Verify BCM fuse 22 (7.5A) and 10 (10A) are OK.

AA1 CHECK THE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle exhibits one or more modules becoming inoperative or observable symptoms are present when a scan tool is connected, this condition is likely due to spread ground terminals 4 and 5 at the DLC. An improperly grounded scan tool will corrupt the network message traffic. Disconnect the diagnostic scan tool cable from the DLC .

Inspect the DLC pins 4, 5 and 16 for spreading or damage using a flex probe with the dimensions: 1.5mm width x .080mm thickness, Rotunda probe 300-08039 (violet).

Are any pin fit concerns or damage observed with DLC pins 4, 5 and 16?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AA2

AA2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect the GWM C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM C2431. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AA3

No	The system is operating correctly at this time. The concern may have been caused by module or scan tool connections. ADDRESS the root cause of any connector or pin issues.

AA3 CHECK THE DLC (DATA LINK CONNECTOR) VOLTAGE SUPPLY FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to AA5

GO to AA4

AA4 CHECK THE GWM (GATEWAY MODULE A) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-13 Ground

C2431-24 Ground

Are the voltages greater than 11 volts?

Yes

GO to AA7

No	VERIFY BCM fuse 22 (7.5A) or 10 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AA5 CHECK THE DLC (DATA LINK CONNECTOR) GROUND CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C251-4 Ground

C251-5 Ground

Are the resistances less than 3 ohms?

Yes

Check the diagnostic scan tool for correct operation.

GO to AA6

AA6 CHECK THE GWM (GATEWAY MODULE A) GROUND CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-1 Ground

C2431-14 Ground

Are the resistances less than 3 ohms?

Yes

GO to AA7

No	REPAIR the circuit in question.

AA7 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AB: U3000:44 ,U3000:45, U3000:46 OR U3000:47

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U3000:44	Control Module: Data Memory Failure	Sets in the GWM when an internal memory failure is detected.
GWM U3000:45	Control Module: Program Memory Failure	Sets in the GWM when an internal failure is detected.
GWM U3000:46	Control Module: Calibration/Parameter Memory Failure	Sets in the GWM when an internal failure is detected.
GWM U3000:47	Control Module: Watchdog/Safety µC Failure	Sets in the GWM when an internal failure is detected.

Possible Sources

AB1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using a diagnostic scan tool, perform the GWM self-test.

Is DTC U3000:44, U3000:45, U3000:46 or U3000:47?

Yes

INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time.

PINPOINT TEST AC: U2100:00

Normal Operation and Fault Conditions

CHECK the vehicle service history for recent service actions related to this module.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U2100:00	Initial Configuration Not Complete: No Sub Type Information	Sets due to incomplete or incorrect PMI procedures.

Possible Sources

Incomplete or incorrect PMI procedures.

AC1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform the GWM self-test.

Is DTC U2100:00 recorded?

Yes

INSTALL As-Built data from PTS following diagnostic scan tool instructions under Module Programming>As-Built.

No	The system is operating correctly at this time.

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